Patent application number | Description | Published |
20080290179 | Method Of Recording Machine-Readable Information - The invention relates to a method of recording machine-readable information on an article, including the steps of: providing a carrier having flakes dispersed therein onto the surface of the article, wherein all of the flakes have a beam-splitting grating pattern encoding the information thereon; aligning the flakes parallel to a sloped plane forming a slope angle with the surface of the article; and, solidifying the carrier. When the article is irradiated with an EM beam, a first portion of the EM beam is reflected from the surface of the article, forming a surface reflection, a second portion of the beam is reflected from the beam-splitting grating pattern, forming an arrangement of sub-beams, and the slope angle provides a spatial separation between the arrangement of sub-beams and the surface reflection, enabling machine-reading. | 11-27-2008 |
20090072185 | Anisotropic Magnetic Flakes - The invention relates to anisotropic, reflective, magnetic flakes. In a liquid carrier and under influence of an external magnetic field, the flakes attract to one another side-by-side and form ribbons which provide higher reflectivity to a coating and may be used as a security feature for authentication of an object. | 03-19-2009 |
20090323155 | Multi-Cell Solid-State Electrochromic Device - A multi-cell electrochromic device comprises a plurality of solid-state electrochromic cells that are arranged in an optical alignment. Each electrochromic cell is separated from an adjacent electrochromic cell in the optical alignment by a transparent conductive layer that is shared by the two adjacent electrochromic cells. | 12-31-2009 |
20090323161 | ELECTRICAL CHARACTERISTICS OF ELECTROCHROMIC DEVICES - One exemplary embodiment of an electrochromic device comprises a tantalum-nitride ion-blocking layer formed between a transparent conductive layer and an electrochromic layer. Another exemplary embodiment of an electrochromic device comprises a tantalum-nitride ion-blocking layer formed between a transparent conductive layer and a counter electrode. Yet another exemplary embodiment of an electrochromic device comprises a type-2 ion-blocking layer formed on a transparent conductive layer as an ion diffusion barrier overlayer. Still another exemplary embodiment of an electrochromic device comprises a transparent conductive layer formed from tantalum nitride. | 12-31-2009 |
20090324907 | TAMPER EVIDENT AND RESISTING INFORMATIONAL ARTICLE AND METHOD OF PRODUCING SAME - A method of protecting an informational article including providing an informational article substrate having a zone for inserting variable information within the zone, and securing a transparent tape, preferably see-through holographic layer having a write-resistant exposed surface over the information. | 12-31-2009 |
20100060987 | Optical Device Exhibiting Color Shift Upon Rotation - An optical device exhibiting a color shift upon rotation is disclosed. The optical device has a textured surface having a relief structure finer than a human eye resolution but large enough not to exhibit diffraction effects. The textured surface is coated with an interference thin film that exhibits a color shift with tilt. A uniform color seen at one angle of rotation changes to another uniform color when the optical device is rotated in its own plane. A method of manufacturing of such an optical device, as well as the use of the optical device as an optical security and authentication element, is also disclosed. | 03-11-2010 |
20110168088 | APPARATUS FOR ORIENTING MAGNETIC FLAKES - A printing apparatus includes a magnetic rotatable roller with a smooth even outer surface for aligning magnetic flakes in a carrier, such as an ink vehicle or a paint vehicle to create optically variable images in a high-speed, linear printing operation. Images can provide security features on high-value documents, such as bank notes. Magnetic flakes in the ink are aligned using magnetic portions of the roller, that can be formed by permanent magnets embedded in a non-magnetic roller body, or selectively magnetized portions of a flexible magnetic cover of the roller. In some embodiments, the roller is assembled for a plurality of interchangeable sections, which can include spinning magnets. Selected orientation of the magnetic pigment flakes can achieve a variety of illusive optical effects that are useful for decorative or security applications. | 07-14-2011 |
20120075701 | OPTICALLY VARIABLE SECURITY DEVICES - An optical device is formed by hot stamping a demetallized hologram to an optically variable foil or to a coating of optically variable ink. In another embodiment a hologram is hot stamped to a banknote or document printed with a color-shifting ink. | 03-29-2012 |
20130084411 | DYNAMIC APPEARANCE-CHANGING OPTICAL DEVICES (DACOD) PRINTED IN A SHAPED MAGNETIC FIELD INCLUDING PRINTABLE FRESNEL STRUCTURES - A device includes a substrate and at least 1,000 flakes resting upon the substrate, each flake including a magnetic layer. The plurality of flakes are aligned so as to form a plurality of rings or curves, wherein within each ring or curve, flakes are tilted at a same angle with respect to the substrate and planes extending from surfaces of said flakes intersect with one another. The device provides a visible image of a single ring or curve when illuminated with a single light source, and three rings or curves are visible when three light sources illuminate the device. The device may be used as a printed light detector. | 04-04-2013 |
20130087060 | APPARATUS FOR ORIENTING MAGNETIC FLAKES - A printing apparatus includes a magnetic rotatable roller with a smooth even outer surface for aligning magnetic flakes in a carrier, such as an ink vehicle or a paint vehicle to create optically variable images in a high-speed, linear printing operation. Images can provide security features on high-value documents, such as bank notes. Magnetic flakes in the ink are aligned using magnetic portions of the roller, that can be formed by permanent magnets embedded in a non-magnetic roller body, or selectively magnetized portions of a flexible magnetic cover of the roller. In some embodiments, the roller is assembled for a plurality of interchangeable sections, which can include spinning magnets. Selected orientation of the magnetic pigment flakes can achieve a variety of illusive optical effects that are useful for decorative or security applications. | 04-11-2013 |
20130285362 | OPTICAL DEVICE EXHIBITING COLOR SHIFT UPON ROTATION - An optical device exhibiting a color shift upon rotation is disclosed. The optical device has a textured surface having a relief structure finer than a human eye resolution but large enough not to exhibit diffraction effects. The textured surface is coated with an interference thin film that exhibits a color shift with tilt. A uniform color seen at one angle of rotation changes to another uniform color when the optical device is rotated in its own plane. A method of manufacturing of such an optical device, as well as the use of the optical device as an optical security and authentication element, is also disclosed. | 10-31-2013 |